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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-20 23:25:57 +0300 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 21:15:27 +0300 |
| commit | 078faac9e8b6c8124bc012bbf97cca59caf6d4ea (patch) | |
| tree | 565af5f9110fd70f649f41af3b296077fd3aa646 /ipc/syscall.c | |
| parent | e340db56483b6e10bd5e5f281071876808801a41 (diff) | |
| download | linux-078faac9e8b6c8124bc012bbf97cca59caf6d4ea.tar.xz | |
ipc: add msgrcv syscall/compat_syscall wrappers
Provide ksys_msgrcv() and compat_ksys_msgrcv() wrappers to avoid in-kernel
calls to these syscalls. The ksys_ prefix denotes that these functions are
meant as a drop-in replacement for the syscalls. In particular, they use
the same calling convention as sys_msgrcv() and compat_sys_msgrcv().
This patch is part of a series which removes in-kernel calls to syscalls.
On this basis, the syscall entry path can be streamlined. For details, see
http://lkml.kernel.org/r/20180325162527.GA17492@light.dominikbrodowski.net
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'ipc/syscall.c')
| -rw-r--r-- | ipc/syscall.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/ipc/syscall.c b/ipc/syscall.c index aa29b0802e26..0228c7afd882 100644 --- a/ipc/syscall.c +++ b/ipc/syscall.c @@ -59,11 +59,11 @@ SYSCALL_DEFINE6(ipc, unsigned int, call, int, first, unsigned long, second, (struct ipc_kludge __user *) ptr, sizeof(tmp))) return -EFAULT; - return sys_msgrcv(first, tmp.msgp, second, + return ksys_msgrcv(first, tmp.msgp, second, tmp.msgtyp, third); } default: - return sys_msgrcv(first, + return ksys_msgrcv(first, (struct msgbuf __user *) ptr, second, fifth, third); } @@ -156,10 +156,10 @@ COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int, second, return -EINVAL; if (copy_from_user(&ipck, uptr, sizeof(ipck))) return -EFAULT; - return compat_sys_msgrcv(first, ipck.msgp, second, + return compat_ksys_msgrcv(first, ipck.msgp, second, ipck.msgtyp, third); } - return compat_sys_msgrcv(first, ptr, second, fifth, third); + return compat_ksys_msgrcv(first, ptr, second, fifth, third); } case MSGGET: return ksys_msgget(first, second); |